摘要
利用浸渍-还原法制备Bi OCl纳米片负载的钯纳米颗粒催化剂(Pd/Bi OCl),对室温催化氧化HCHO产氢性能进行了研究,并与纯Pd纳米颗粒催化效果进行了对比.研究结果表明,Pd/Bi OCl催化剂在有效降低贵金属Pd用量情况下(仅为2%wt),仍表现出比纯Pd纳米颗粒更高的催化HCHO产氢的性能.此外,通过进一步优化甲醛浓度、氢氧化钠浓度、氧气浓度和反应温度等参数,Pd/Bi OCl催化氧化HCHO产氢速率最高可达到200 m L/(min*gcatalyst).进一步研究结果表明,Pd/Bi OCl催化HCHO产氢反应的活化能仅为15.2 k J/mol,远低于无催化剂条件下甲醛产氢的活化能65 k J/mol.
The catalyst Pd / Bi OCl was prepared by the impregnation-reduction method,the hydrogen production performance was studied on the room temperature. By comparing the pure Pd nanoparticles and Pd / Bi OCl catalyze the formaldehyde to produce hydrogen under the same response condition,and Pd / Bi OCl has better catalyzed performance. By further optimizing the reaction parameters such as the amount of the palladium in Bi OCl,formaldehyde concentrations,Na OH concentrations,oxygen concentrations and temperature,the hydrogen generation rate o ver Pd / Bi OCl was up to 200 m L /（ min·gcatalyst）. The activation energy for the hydrogen generation reaction was calculated to be 15. 2 k J / mol,which was much lower than the previously reported value of 65 k J / mol,for no catalyst participation.
出处
《分子催化》
EI
CAS
CSCD
北大核心
2015年第5期441-447,共7页
Journal of Molecular Catalysis(China)
基金
国家自然科学基金(21303232)
甘肃省自然科学基金B(148RJZA003)~~
